ORP Falling Drastically Like Clock Work

[bdub22rhp]

I know not to chase ORP, but I cant help but notice mine falls drastically on the :55 of hours somewhere between 4, 8, or 10 hours. I have been losing corals recently that I have had forever and noticed tonight my tomini tang didnt eat too much that I have had for a few years. I had recently switched to AF 1, 2, 3 components but has stopped dosing to try to figure this out. Any ideas? My levels are a little low from a week of not dosing, but my orp values keep dropping even without dosing.

 

[Cory]

Lots of things can effect orp. Whats happening durring those times?

 

[EmdeReef]

This should help answer most questions reORP

http://www.reefkeeping.com/issues/2003-12/rhf/feature/index.php

 

[bdub22rhp]

That's what I was hoping you all might be able to help figure out. I'm dosing nothing....have heater, ato, cheato, skimmer, carbine reactor, gfo reactor
...pretty standard setup. Cant figure it out.